Method and machine for punching out articles from strips



i `0CL 2,1945. z M 5|DEBOTHAM 2,386,1474

METHOD AND MACHINE FOR PUNCHING` OUT ARTICLES FRQMS'RIPS FiledAug. 1e.194,4 'fz-shqets-'snee 1'l Patented Oct. `2., 19445' y `.z sau? UNITEDSTATES PATsNrorFlcs Ms'rnon AND A2,336,147 MACHINE Fon PUNUHING OUT FROMSTRIPS Melvin H. Sidebotham, Newton, Mass., assignor of one-half toHarlow M. Russell, Chelsea, Mass.

Applicationp'Allgllst 16, 1944, Serial No. 549,756

11 Claims.. (Cl. 164-22) This` invention relates generally to methodsand devices for cutting articles from a web or strip of any material, byuse of automatic machinery.

One object oi my invention is to provide a maand severing articles froma web of any material;

Another object of. my invention is to provide an improved method formaking` articles from a showing the progressive steps for converting theweb into finished articles of any material.

Fig. 4 is an end view of the strip or web. Fig. 5 is a plan view, of twosets of four each,

. of articles as they 'are severed from the web.

Fig.'6 is aneiid view of Fig. 5. Fig. 7 isa plan view, drawn to a larges oi" one set of four articles.

the supply roll A, and in the web. The punching operation follows to cuta circular opening D in the center] of each star cut. The advancing webis-then cut 'and chine for progressively die-cutting, punching,

` intermittently from the said roll A by the action' severed to providea succession of units of paperboard' collars as shown by Fig. 5.

Referring to Figs. 1 and 2 of the drawings, the di'erent parts ormembers of the machine are ymounted on a suitable base I. i

Mounted in bearings 2 at one 'end of base I is a roll of paper A fromwhich is drawn the paperboard web B. 'I'he web B is drawn uniformly andi of feed rollers I .Iournalled in brackets l secured ale,

Fig. 8 isa section through the cutting and severing'knives at 8-8 o'fFig. 2.

Fig. 9 is a section through the star" "cutting dies at 9-9 of Fig. 2.

Fig. -10 is a partial view of the punching device at III-I0 ofFig. 2. I

Fig. 11 is a planview of the die base shown in Figs. 1 and 2.

Fig. 12 is an elevation view of Fig. 1l

Fig. 13 is a section "at I3-I3 of Fig. ll.

'Fig 14 is a partial section at Il-Il of Fig. l.

Similar reference characters indicate similar parts or features in allof the views.

It will aid toward an understanding of the machine and of the method ofmaking paperboard collars, to first describe the product made bythemachine and the operation o! the machine. Fig. 5 illustrates' two unitsof four each of paperboard collars asthey are delivered from themachine. Fig. '7 illustrates at a larger scale one to base I. `It willbe understood that the feed rollers 3 are in practice driven as requiredand at the proper-speed to intermittently draw the web of paperhoardfromthe roll A and advance it to the cutting and punching devices. 20

From the feed rollers 3 the paper web is first advanced to the "starcutting unit which comprises a die platen 5 secured to base I. Mountedabove the die platen 5 is a die head 6' having' secured thereto a numberof sets of cutting knives i 'I (Figs. 2 and 9). The knivesof 'each setextend radially outward from a predetermined point, to make star" cutswhen pressed against the web of paperboard. The diehead 6 isoperative'ly vpositioned. over the dieplaten 5, and reclprocallyoperated in timed relation with the the web as' shown-in Fig. 3. v

From the star cutting unit the web B is adadvancing web tomake fstar`shaped cuts C in vanced' to a punching device which punches round'holes D out of the web at the center of each fstar C previously cut inthe web. -The punching unit comprises a punchplaten 8 (Figs. 1, 2,10,111, 12, 13 and 14) secured toba'se I in advance of the star cuttingunit. Thepunch plaisent is provided with a plurality of circularopenings 9 eachof the size of the hcles desired to be made in the webB.- The edge portion, of the top surface III of the punch platen 8,around each opening 9 serves as a cutting edge. Mounted on and securedto the Itop surface of the .punchplaten 8.

`is a ball cage II (Figs. 2 and l0) which is prounit of four collarswherein C indicates .star

' cuts; D indicates circular lopenings and E represents division slotsvwhich partially divide the unit to provide four individual collars. Thedivision slots E do not .completely divide the unit in to separatecollars, because a small connecting por` tion'F is left to. hold thefour collars together for handling and packaging purposes. Before thecollars are used they are separated by tearing at F to provide fourindividual collars.

In the operation of the' machine a web of paperboard B (Figs. 1 and 2)is first .drawn from vided with a plurality of openings I2 each of'which guides and retains a spherical steel ball Il. The openings I2 aresomewhat larger than the diameter o'f the steel balls Il.' Positionedabove the ball vcage I I is a punch head Il reciprocally operated intimed relation with the advanciing webB, to strike the steel balls I3positionedV on the said web. with the result that 4the steel balls pressthe web against the edges of the openings I2 on the top .surface I0 ofthe punch platen to punch out circular sections of the web B to provideopenings D (Figs. 3. 5 and '1). Secured in which project below thebottom surface of the the star cutsa C made the punch head I 4 areadjusting screws Il punch head Il and serve as the contact elementbetween the punch head and the steel balls I 3. The adjusting screws l5serve to make uniform the striking force of the punch head against thesteel balls.

When the punch head Il is in raised position the steel balls I3 rest onthe web B. The web,

however, is free to advance, because the steel balls willroll on the webwhen the web is moved forward over the punch platen.

'I'his novel punching device is easily sharpenedby simply grinding thetop surface I0 of the platen II to provide a new cutting surface aroundthe` upper edge of holes 8'. The steel balls i3 being free to rotatepresent an infinite succession of punching surfaces. Thus the steelballs may be used for a long time without being resurfaced or replaced.i f y From the punching unit the web B is advanced to the slitting andsevering unit which operates to divide and-sever the web into units ofpaper collars as shownin Figs. and '1. The slitting and A`severing unitcomprises a-die bed i8 (Fig. 2) secured to base I. Positioned above thedie bed Il is a die head I1 reciprocally operated Ain timed relationwith the advancement ef the `web B.

' secured te the underside er the die head |1- are slitting knives I8and severing knife I9 (Figs. 2

and') which, when4 the die head I I is moved downward, presses the web Bagainst the platen IB and slits and severs the web to provide units ofpaper collars from the web.

It will. be obvious that with each downward e operation of the die head-I'I the severing knife It will be readily understood,- without needof Y,illustration, that any suitable motor may be employed for operating themachine; and that suitable gearing,v mountings and other mechanismsv areemployed in practice to cause the variousA mechanisms to operate at theproper speed. 00 eii'ect travel of the web through the machine. and tocause theseveral units of the machine to operstein the sequencedescribed.

Having now described my invention, what kI- claim is: Y.

-l. In a machine for die cutting; punching and Vering a-web ofmaterlal'to provide articles,4

means for advancing a web of material from a roll.

- a die cutting device for making a number ofsets of pattern cutswithinthe-.margins ofthe web, a punching device for -cutting a circularOpening inthe web at. each set of pattern cuts, and a cutting unit forcutting -and severing the `web to provide articles from the web.- I 2.In a machine for, making paper collars,

means for feeding a web lof paper, a die cutting device for making a setof 'cutswithin the margins of the web, the'cutsbeing radially directedaway from a central point on the web. a punching defor advancing a webof material from a roll, a die cutting device for making a number of-sets of radially directed cuts in the web. a punching device forcutting a circular opening in the web at the center of each set ofradially directed cuts, and a die cutting unit for cutting and severingthe web to provide articles from the web.

4.' In a machine kfor making paper articles, means for advancing a webof paperboard, a die cutting device for making a number of sets ofradially directed cuts in the web, a punching device for cutting acircular opening in the web at.the lcenter of each set of radiallydirected cuts, and a die cutting unit for cutting and severing the web.

5. In a machine for making paper collars, means for feeding a web ofpaper, a die cutting device for making sets of radially directed cutswithin the margins of the web, apunching device for cutting-al circularopening in the web at the p oiht Ofbeginning of each set of radiallydirected cuts. e

' y6. 'I'he method of producing iiat articles from a web, consisting ofmaking aplurality of sets of cuts in the web, the cuts of' each set ofcuts being radially directed away from a central point, punching acircular opening at the c entrai. point of each set of lradiallydirected cuts, and then cutting the web to provide articles having anopeningy in the center with radiallyV directed cuts.

- "1. 'Ihe method of producing paperboard collars from a web of paper,consisting of making a number of sets ofv cuts in the web, the cuts ofeach set of cuts being radially directed away from a central point,punching a circular opening, at the centralpoint of each set of radiallydirected cuts, and then cutting the web to provide units of four collarsdetachably connected together, each collar having an opening andradially directed cuts in the central portion.

8. 'I'he method of producing paperboard `collars from a web of paper,consisting of making a number of sets of radially directed cuts in theweb, and then cutting the web to provide an opening therethrough at apoint on each set of radially'directed cuts, and then cutting the webinto sections to provide individual collars.

9. 'I'he method of producing ilat paperboard collars froma web ofpaperboard, comprising, v I

making a plurality of sets of radially directed cuts in the web,'punching a circular opening at the central point of each set ofradially directed cuts. and then cutting the web to pro- Jviderectangular shaped collars having an opening in the center with radiallydirected cuts.

i0. The method of producing paperboard collars from a web of paper,comprising, making a number of sets of radially directed cuts in theweb, punching a circular openingat the central vice for cutting acircular opening in the web atv the point of beginning-oi' the saidradially directed cuts. andmeans for severing predeterhaving an openingpoint 'of each set of radially directed cuts. anti then cutting the webto" provide units of four collars tearably connectedtogether, eachlcollar` and radially directed cuts in the central portion.

l1. The method o'f producing paperboard collars from a web of paper,comprising, making -r a number of sets of radially directed cuts in theweb, and then cutting the web,fto .provide an ,Opening therethrough at apoint on each set of radially directed cuts, and then cutting the webintosections to provide individual collars.-

MELVIN smmao'mau.-

